<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="https://unpkg.com/vue"></script>
    <style>
        .modal-mask {
            position: fixed;
            z-index: 9998;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, .5);
            display: table;
            transition: opacity .3s ease;
        }

        .modal-wrapper {
            display: table-cell;
            vertical-align: middle;
        }

        .modal-container {
            width: 300px;
            margin: 0px auto;
            padding: 20px 30px;
            background-color: #fff;
            border-radius: 2px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, .33);
            transition: all .3s ease;
            font-family: Helvetica, Arial, sans-serif;
        }

        .modal-header h3 {
            margin-top: 0;
            color: #42b983;
        }

        .modal-body {
            margin: 20px 0;
        }

        .modal-default-button {
            float: right;
        }

        /*
        * the following styles are auto-applied to elements with
        * v-transition="modal" when their visiblity is toggled
        * by Vue.js.
        *
        * You can easily play with the modal transition by editing
        * these styles.
        */

        .modal-enter, .modal-leave {
            opacity: 0;
        }

        .modal-enter .modal-container,
        .modal-leave .modal-container {
            -webkit-transform: scale(1.1);
            transform: scale(1.1);
        }

    </style>
</head>
<body>
<!-- 实现script定义一个模板 -->
<script type="x/template" id="modal-template">
    <!--模板是否显示通过v-show="show"来设置， transition设置动画效果-->
    <div class="modal-mask" v-show="show" transition="modal">
        <div class="modal-wrapper">
            <div class="modal-container">
                <div class="modal-header">
                    <!--slot 相当于header占位符-->
                    <slot name="header">
                        default header
                    </slot>
                </div>
                <div class="modal-body">
                    <!--slot 相当于body占位符-->
                    <slot name="body">
                        default body
                    </slot>
                </div>
                <div class="modal-footer">
                    <!--slot 相当于footer占位符-->
                    <slot name="footer">
                        default footer
                    </slot>
                    <button class="modal-default-button" @click="show = false">OK</button>
                </div>
            </div>
        </div>
    </div>
</script>
<div id="app">
    <!--点击按钮时设置vue实例特性showModal的值为true-->
    <button id="show-modal" @click="showModal = true">show modal</button>
    <!--modal是自定义的一个插件，插件的特性show绑定vue实例的showModal特性-->
    <modal :show.sync="showModal">
        <!--替换modal插件中slot那么为header的内容-->
        <h3 slot="header">Custom Header</h3>
    </modal>
</div>
<script>
    //定义一个插件，名称为modal
    Vue.component("modal", {
        //插件的模板绑定id为modal-template的DOM元素内容
        template: "#modal-template",
        props: {
            //特性，类型为布尔
            show:{
                type: Boolean,
                required: true,
                twoWay: true
            }
        }
    });
    //实例化vue，作用域在id为app元素下，
    new Vue({
        el: "#app",
        data: {
            //特性，默认值为false
            showModal: false
        }
    });

</script>
</body>
</html>